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<h2>Introduction</h2>
<p>The available (internal) filters are listed here and divided into categories.
A short description is added, including the supported color formats (and sample
types for the audio filters). There are some functions which combine two or more
clips in different ways. How the video content is calculated is described for
each function, but <a href="filters_mult_input_clips.htm">here is a summary which
explains which properties that the resulting clip will have</a>.</p>

<h2>
<a NAME="producing"></a><span class="mw-headline">Media file filters</span></h2>

<p>These filters can be used to read or write media files. Usually they produce
source clips for processing. See debug filters for non-file source filters.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/avisource.htm">AVISource / OpenDMLSource /
  AVIFileSource</a></td>

<td WIDTH="70%">Opens an AVI file.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/directshowsource.htm">DirectShowSource</a></td>

<td WIDTH="70%">DirectShowSource reads filename using DirectShow</td>
</tr>

<tr>
<td><a href="corefilters/imagesource.htm">ImageReader / ImageSource /
  ImageSourceAnim</a></td>

<td>These filters produce a video clip by reading in still images or an animated
  image.</td>
</tr>
<tr>
    <td><a href="corefilters/imagewriter.htm">Imagewriter</a></td>
    <td>Writes frames as images to your hard disk.</td>
</tr>
<tr>
<td><a href="corefilters/import.htm">Import</a></td>

<td>Import an AviSynth script into the current script</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/segmentedsource.htm">SegmentedAVISource
/ SegmentedDirectShowSource</a></td>

<td WIDTH="70%">The SegmentedAVISource filter automatically loads up to
100 avi files per argument</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/soundout.htm">SoundOut</a></td>

<td WIDTH="70%">SoundOut is a GUI driven sound output module for AviSynth (it
  exports audio to several compressors).</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/avisource.htm"> WAVSource</a></td>

<td WIDTH="70%">Opens a WAV file or the audio of an AVI file.</td>
</tr>

</table>

<h2> <a NAME="color_conversion"></a><span class="mw-headline">Color conversion and
adjustment filters</span></h2>

<p>These filters can be used to change the color format or adjust the colors of
a clip.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td><a href="corefilters/coloryuv.htm">ColorYUV</a></td>

<td>Adjusts colors and luma independently.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/convert.htm">ConvertBackToYUY2 /
  ConvertToRGB / ConvertToRGB24 / ConvertToRGB32 / ConvertToYUY2 / ConvertToY8 /
  ConvertToYV411 / ConvertToYV12 / ConvertToYV16 / ConvertToYV24</a></td>

<td WIDTH="70%">AviSynth can deal internally with the color formats, RGB24,
RGB32, YUY2, Y8, YV411, YV12, YV16 and YV24. These filters convert between them.</td>
</tr>
<tr>
    <td WIDTH="30%"><a href="corefilters/fixluminance.htm">FixLuminance</a></td>
    <td WIDTH="70%">Correct shifting vertical luma offset</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/greyscale.htm">Greyscale</a></td>

<td WIDTH="70%">Converts a video to greyscale.</td>
</tr>
<tr>
<td><a href="corefilters/invert.htm">Invert</a></td>

<td>Inverts selected color channels of a video.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/levels.htm">Levels</a></td>

<td WIDTH="70%">The Levels filter scales and clamps the blacklevel and whitelevel and adjusts the gamma.</td>
</tr>
<tr>
<td><a href="corefilters/limiter.htm">Limiter</a></td>

<td>A filter for clipping levels to within CCIR-601 range.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/mergergb.htm">MergeARGB / MergeRGB</a></td>

<td WIDTH="70%">This filter makes it possible to select and combine a color
channel from each of the input videoclips.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/merge.htm">Merge / MergeChroma / MergeLuma</a></td>

<td WIDTH="70%">This filter makes it possible to merge luma, chroma or both from
a videoclip into another. There is an optional weighting, so a percentage
between the two clips can be specified.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/adjust.htm">RGBAdjust</a></td>

<td WIDTH="70%">Adjust each color channel seperately.</td>
</tr>
<tr>
<td><a href="corefilters/showalpha.htm">ShowAlpha / ShowRed / ShowGreen / ShowBlue</a></td>

<td>Shows the selected channel of an (A)RGB clip.</td>
</tr>
<tr>
<td><a href="corefilters/swap.htm">SwapUV / UToY / UToY8 / VToY / VToY8 / YToUV</a></td>

<td>Swaps/copies chroma channels of a clip.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/subtract.htm">Subtract</a></td>

<td WIDTH="70%">Subtract produces an output clip in which every pixel is
set according to the difference between the corresponding pixels</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/tweak.htm">Tweak</a></td>

<td WIDTH="70%">Adjust the hue, saturation, brightness, and contrast.</td>
</tr>
</table>

<h2><span class="mw-headline"><a name="overlay_mask"></a>Overlay and Mask
filters</span></h2>
<p>These filters can be used to layer clips with or without using masks and to
create masks.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/layer.htm">
ColorKeyMask</a></td>

<td WIDTH="70%">Sets the alpha-channel (similar as Mask does) but generates it
  by comparing the color.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/layer.htm">Layer</a></td>

<td WIDTH="70%">Layering two videos.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/layer.htm"> Mask</a></td>

<td WIDTH="70%">Applies an alpha-mask to a clip.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/maskhs.htm">MaskHS</a></td>

<td WIDTH="70%">Returns a mask (as Y8) of clip using a given hue and saturation
  range.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/overlay.htm">Overlay</a></td>

<td WIDTH="70%">Overlay puts two clips on top of each other with an optional
  displacement of the overlaying image, and using different overlay methods.
  Furthermore opacity can be adjusted for the overlay clip.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/layer.htm"> ResetMask</a></td>

<td WIDTH="70%">Applies an &quot;all-opaque&quot; alpha-mask to clip.</td>
</tr>

</table>

<h2><span class="mw-headline"><a name="deformation"></a>Geometric deformation
filters</span></h2>
<p>These filters can be used to change image size, process borders or make other
deformations of a clip.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/addborders.htm">AddBorders</a></td>

<td WIDTH="70%">AddBorders adds black borders around the image.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/crop.htm">Crop / CropBottom</a></td>

<td WIDTH="70%">Crop crops excess pixels off of each frame.</td>
</tr>

<tr>
    <td WIDTH="30%"><a href="corefilters/flip.htm">FlipHorizontal / FlipVertical</a></td>
    <td WIDTH="70%">Flips the video upside-down or left-to-right</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/letterbox.htm">Letterbox</a></td>

<td WIDTH="70%">Letterbox simply blackens out the top and the bottom and
optionally left and right side of each frame.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/overlay.htm">Overlay</a></td>

<td WIDTH="70%">Overlay puts two clips on top of each other with an optional
  displacement of the overlaying image, and using different overlay methods.
  Furthermore opacity can be adjusted for the overlay clip.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/reduceby2.htm">ReduceBy2 / HorizontalReduceBy2
/ VerticalReduceBy2</a></td>

<td WIDTH="70%">ReduceBy2 reduces the size of each frame by half.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/resize.htm">BilinearResize / BicubicResize
/ BlackmanResize  / GaussResize / LanczosResize / Lanczos4Resize / PointResize
/ SincResize / Spline16Resize / Spline36Resize / Spline64Resize</a></td>

<td WIDTH="70%">The Resize filters rescale the input video frames to an
arbitrary new resolution, using different sampling algorithms.</td>
</tr>
<tr>
    <td><a href="corefilters/skewrows.htm">SkewRows</a></td>
    <td>SkewRows skews the rows of a clip.</td>
</tr>
<tr>
    <td><a href="corefilters/turn.htm">TurnLeft / TurnRight / Turn180</a></td>
    <td>Rotates the clip 90 degrees counterclock wise / 90 degrees clock wise / 180 degrees.</td>
</tr>
</table>

<h2><span class="mw-headline"><a name="pixel_restoration"></a>Pixel restoration
filters</span></h2>
<p>These filters can be used for image detail (pixel) restoration (like
denoising, sharpening) of a clip.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/blur.htm">Blur / Sharpen</a></td>

<td WIDTH="70%">These are simple 3x3-kernel blurring and sharpening filters.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/convolution.htm">GeneralConvolution</a></td>

<td WIDTH="70%">General 3x3 or 5x5 convolution matrix.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/soften.htm">SpatialSoften / TemporalSoften</a></td>

<td WIDTH="70%">The SpatialSoften and TemporalSoften filters remove noise
from a video clip by selectively blending pixels.</td>
</tr>
<tr>
    <td WIDTH="30%"><a href="corefilters/fixbrokenchromaupsampling.htm">FixBrokenChromaUpsampling</a></td>
    <td WIDTH="70%">I noticed that the MS DV codec upsamples the chroma channels
incorrectly, and I added a FixBrokenChromaUpsampling filter to compensate
for it.</td>
</tr>
</table>

<h2>
<a NAME="timeline_editing"></a><span class="mw-headline">Timeline editing
filters</span></h2>

<p>These filters can be used to arrange frames in time (clip cutting, splicing
and other editing).</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/splice.htm">AlignedSplice / UnalignedSplice</a></td>

<td WIDTH="70%">AlignedSplice and UnalignedSplice join two or more video
clips end to end.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/fps.htm">AssumeFPS / AssumeScaledFPS / ChangeFPS / ConvertFPS</a></td>

<td WIDTH="70%">Changes framerates in different ways.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/deleteframe.htm">DeleteFrame</a></td>

<td WIDTH="70%">DeleteFrame deletes a set of single frames, given as a number of arguments.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/dissolve.htm">Dissolve</a></td>

<td WIDTH="70%">Dissolve is like AlignedSplice, except that the clips are
combined with some overlap.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/duplicateframe.htm">DuplicateFrame</a></td>

<td WIDTH="70%">DuplicateFrame duplicates a set of single frames, given as a number of arguments.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/fade.htm">FadeIn0 / FadeOut0 / FadeIn / FadeOut / FadeIn2 /
  FadeOut2 / FadeIO0 / FadeIO / FadeIO2</a></td>

<td WIDTH="70%">FadeIn and FadeOut cause the video stream to fade linearly
to black at the start or end.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/freezeframe.htm">FreezeFrame</a></td>

<td WIDTH="70%">The FreezeFrame filter replaces all the frames between
first-frame and last-frame with a selected frame.</td>
</tr>

<tr>
    <td WIDTH="30%"><a href="corefilters/interleave.htm">Interleave</a></td>
    <td WIDTH="70%">Interleave interleaves frames from several clips on a frame-by-frame
basis.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/loop.htm">Loop</a></td>

<td WIDTH="70%">Loops the segment from start frame to end frame a given
number of times.</td>
</tr>

<tr>
    <td WIDTH="30%"><a href="corefilters/reverse.htm">Reverse</a></td>
    <td WIDTH="70%">This filter makes a clip play in reverse.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/select.htm">SelectEven / SelectOdd</a></td>

<td WIDTH="70%">SelectEven makes an output video stream using only the
even-numbered frames</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/selectevery.htm">SelectEvery</a></td>

<td WIDTH="70%">SelectEvery is a generalization of filters like SelectEven
and Pulldown.</td>
</tr>

<tr>
<td><a href="corefilters/selectrangeevery.htm">SelectRangeEvery</a></td>

<td>This filters selects a range of frames with a certain period.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/trim.htm">Trim</a></td>

<td WIDTH="70%">Trims a video clip so that it includes only the frames first-frame through last-frame.</td>
</tr>
</table>

<h2>
<a NAME="interlaced"></a><span class="mw-headline">Interlace filters</span></h2>

<p>These filters can be used for creating and processing field-based material
(which is frame-based material separated into fields). AviSynth is capable of
dealing with both progressive and interlaced material. The main problem is, that
it often doesn't know what it receives from source filters. This is the reason
that the field-based flag exists and can be used when dealing with interlaced
material. More information about field-based video can be found
<a href="advancedtopics/interlaced_fieldbased.htm">here</a>.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

  <tr>
    <td WIDTH="30%"><a href="corefilters/parity.htm">AssumeFrameBased
/ AssumeFieldBased
      </a></td>
    <td WIDTH="70%">Forces frame-based or field-based material.
          </td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/parity.htm">
      AssumeTFF / AssumeBFF
      </a></td>
    <td WIDTH="70%">Forces field order.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/bob.htm">Bob</a></td>
    <td WIDTH="70%">Bob takes a clip and bob-deinterlaces it</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/parity.htm">
      ComplementParity
      </a></td>
    <td WIDTH="70%">Changes top fields to bottom fields and vice-versa.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/doubleweave.htm">DoubleWeave</a></td>
    <td WIDTH="70%">The DoubleWeave filter operates like Weave, except that it
	produces double the number of frames by combining both the odd and even pairs
	of fields.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/peculiar.htm">PeculiarBlend</a></td>
    <td WIDTH="70%">This filter blends each frame with the following frame
in a peculiar way.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/pulldown.htm">Pulldown</a></td>
    <td WIDTH="70%">The Pulldown filter simply selects two out of every five
frames of the source video.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/separatefields.htm">SeparateColumns / SeparateRows</a></td>
    <td WIDTH="70%">Takes a clip and separates the columns or rows of each frame
      into new frames.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/separatefields.htm">SeparateFields</a></td>
    <td WIDTH="70%">SeparateFields takes a frame-based clip and splits each
frame into its component top and bottom fields.</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/swapfields.htm">SwapFields</a></td>
    <td WIDTH="70%">The SwapFields filter swaps the two fields in an interlaced
frame</td>
  </tr>

  <tr>
    <td WIDTH="30%"><a href="corefilters/weave.htm">Weave</a></td>
    <td WIDTH="70%">Weave takes even pairs of fields from a Fields Separated input
	video clip and combines them together to produce interlaced frames.</td>
  </tr>
</table>

<h2>
<a NAME="audio"></a><span class="mw-headline">Audio processing filters</span></h2>
<p>These filters can be used to process audio. Audio samples from a clip will be
automatically converted if any filters requires a special type of sample. This
means that if a filter doesn't support the type of sample it is given, it will
automatically convert the samples to something it supports. The internal formats
supported in each filter is listed in the sample type column. A specific sample
type can be forced by using the <a href="corefilters/convertaudio.htm" title="ConvertAudio">ConvertAudio</a>
functions.</p>
<p>If the sample type is float, when AviSynth has to output the data, it will be
converted to 16 bit, since float cannot be passed as valid AVI data.&nbsp;</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/amplify.htm">Amplify / AmplifydB</a></td>

<td WIDTH="70%">Amplify multiply audio samples by amount.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/assumerate.htm">AssumeSampleRate</a></td>

<td WIDTH="70%">Adjusts the playback speed of the audio.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/audiodub.htm">AudioDub / AudioDubEx</a></td>

<td WIDTH="70%">AudioDub takes the video stream from the first argument
and the audio stream from the second argument and combines them. AudioDubEx is
  similar, but it doesn't throw an exception if both clips don't have a video or
  audio stream.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/trim.htm">AudioTrim</a></td>

<td WIDTH="70%">Trims an audio clip so that it includes only the start_time through
  end_time.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/converttomono.htm">ConvertToMono</a></td>

<td WIDTH="70%">Merges all audio channels.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/convertaudio.htm">ConvertAudioTo8bit
/ ConvertAudioTo16bit / ConvertAudioTo24bit / ConvertAudioTo32bit / ConvertAudioToFloat</a></td>

<td WIDTH="70%">Converts audio samples to 8, 16, 24, 32 bits or float.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/delayaudio.htm">DelayAudio</a></td>

<td WIDTH="70%">DelayAudio delays the audio track by seconds seconds.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/ensuresync.htm">EnsureVBRMP3Sync</a></td>

<td WIDTH="70%">Corrects out-of-sync mp3-AVI's, when seeking ot trimming.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/getchannel.htm">GetChannel</a></td>

<td WIDTH="70%">Returns a channel from an audio signal.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/killaudio.htm">KillAudio</a></td>

<td WIDTH="70%">Removes the audio from a clip completely.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/killaudio.htm">KillVideo</a></td>

<td WIDTH="70%">Removes the video from a clip completely.</td>
</tr>

<tr>
<td><a href="corefilters/mergechannels.htm">MergeChannels</a></td>

<td>Merges channels of two or more audio clips.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/mixaudio.htm">MixAudio</a></td>

<td WIDTH="70%">Mixes audio from two clips.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/normalize.htm">Normalize</a></td>

<td WIDTH="70%">Amplifies the entire waveform as much as possible, without
clipping.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/resampleaudio.htm">ResampleAudio</a></td>

<td WIDTH="70%">Performs a change of the audio sample rate.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/ssrc.htm">SSRC</a></td>

<td WIDTH="70%">Performs a high-quality change of the audio sample rate. It uses
  SSRC by Naoki Shibata, which offers the best resample quality available.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/supereq.htm">SuperEQ</a></td>

<td WIDTH="70%">High quality 16 band sound equalizer.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/timestretch.htm">TimeStretch</a></td>

<td WIDTH="70%">This filter can change speed of the sound without changing the
  pitch, and change the pitch of a sound without changing the length of a sound.</td>
</tr>

</table>

<h2>
<a NAME="meta"></a><span class="mw-headline">Meta filters</span></h2>

<p>These special filters can be used to control other filters execution.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

  <tr>
    <td WIDTH="30%"><a href="corefilters/animate.htm">Animate / ApplyRange</a></td>
    <td WIDTH="70%">Animate (ApplyRange) is a meta-filter which evaluates its
parameter filter with continuously varying (the same) arguments.</td>
  </tr>

  <tr>
    <td><a href="corefilters/tcpdeliver.htm">TCPDeliver</a></td>
    <td>This filter will enable you to send clips over your network. You can connect several clients to the same machine.</td>
  </tr>

</table>

<h2><span class="mw-headline"><a name="conditional"></a>Conditional filters</span></h2>
<p>The basic characteristic of conditional filters is that 'their scripts' are
evaluated (executed) at every frame instead of the whole clip. This allows for
complex video processing that would be difficult or impossible to be performed
by a normal AviSynth script.</p>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

  <tr>
    <td WIDTH="30%"><a href="corefilters/conditionalfilter.htm">ConditionalFilter / FrameEvaluate
/ ScriptClip / ConditionalSelect</a> </td>
    <td WIDTH="70%">ConditionalFilter returns source1 if some condition is met, otherwise it
      returns source2. ScriptClip/FrameEvaluate returns the clip which is
      returned by the function evaluated on every frame. ConditionalSelect
      returns one frame from several sources based on an integer evaluator.</td>
  </tr>
  <tr>
    <td WIDTH="30%"> <a href="corefilters/conditionalreader.htm">ConditionalReader</a></td>
    <td WIDTH="70%">ConditionalReader allows you to import information from a text file,
      with different values for each frame - or a range of frames.</td>
  </tr>
  <tr>
    <td WIDTH="30%"><a href="corefilters/write.htm">WriteFile / WriteFileIf / WriteFileStart / WriteFileEnd</a></td>
    <td WIDTH="70%">These filters evaluate expressions and output the results to a
      text-file.</td>
  </tr>
</table>

<h2>
<a NAME="debug"></a>Debug filters</h2>

<table BORDER="1" CELLSPACING=0 CELLPADDING=4 WIDTH="90%" >

<tr>
<td WIDTH="30%"><a href="corefilters/blankclip.htm">BlankClip / Blackness</a></td>
<td WIDTH="70%">The BlankClip filter produces a solid color, silent video
clip of the specified length (in frames).</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/colorbars.htm">ColorBars / ColorBarsHD</a></td>

<td WIDTH="70%">The ColorBars filters produce a video clip containing SMPTE
color bars scaled to any image size.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/compare.htm">Compare</a></td>

<td WIDTH="70%">Compares two clips and prints out information about the
differences.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/histogram.htm">Histogram</a></td>

<td WIDTH="70%">Adds a Histogram.</td>
</tr>

<tr>
<td><a href="corefilters/info.htm">Info</a></td>

<td>Prints out image and sound information.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/message.htm">MessageClip</a></td>

<td WIDTH="70%">MessageClip produces a clip containing a text message</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/showfive.htm">ShowFiveVersions</a></td>

<td WIDTH="70%">ShowFiveVersions takes five video streams and combines
them in a staggered arrangement from left to right.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/showframes.htm">ShowFrameNumber / ShowSMPTE / ShowTime</a></td>

<td WIDTH="70%">ShowFrameNumber draws text on every frame indicating what
number Avisynth thinks it is.<br>
ShowSMPTE displays the SMPTE timecode. <b>hh:mm:ss:ff</b><br>
ShowTime displays the duration with millisecond resolution. <b>hh:mm:ss.sss</b></td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/stack.htm">StackHorizontal / StackVertical</a></td>

<td WIDTH="70%">StackHorizontal takes two or more video clips and displays
them together in left-to-right order.</td>
</tr>

<tr>
    <td WIDTH="30%"><a href="corefilters/subtitle.htm">Subtitle</a></td>
    <td WIDTH="70%">The Subtitle filter adds a single line of anti-aliased
text to a range of frames.</td>
</tr>
<tr>
<td WIDTH="30%"><a href="corefilters/tone.htm">Tone</a></td>

<td WIDTH="70%">This will generate sound.</td>
</tr>

<tr>
<td WIDTH="30%"><a href="corefilters/version.htm">Version</a></td>

<td WIDTH="70%">The Version filter generates a video clip with a short
version and copyright statement</td>
</tr>
</table>

<br><kbd>$Date: 2012/04/15 14:13:14 $</kbd>
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